3. Teachers teaching practical research are interested in knowing what study techniques their students are utilizing. Rather than assessing all students, the researchers randomly select 10 students from each of the sections to comprise their sample.

Q: Air-USA has policy of bOOKing as many as 25 persons on an airplane that can seat only 23. (Past stud...

A: Given n=25 p=0.89 PX=x=Cx25(0.89)x(0.17)25-x where x=0,1,2.....25 Now to find PX>23=P(X=24)+P(X=2...

Q: A normal population has a mean of 19.0 and a standard deviation of 5.0 and sample size of 5 The z v...

A:

Q: S(e* + x° + e°) +, x° + e°) dx .

A:

Q: (a) The mean and variance of a discrete random variable X are 6 and 2 respectively. Assuming X to be...

A:

Q: The random variable is the number of 4's facing on the dice. You roll three colored dice: 1 6 2 Give...

A: GivenA three colored dice is rolled

Q: Can the following table be a probability distribution? P(x) 0.1758 2 0.0463 0.3103 4. 0.2778 0.0826 ...

A: We have given that  X 1 2 3 4 5 P(x) 0.1758 0.0463 0.3103 0.2778 0.0826  

Q: 16. A single card is drawn from an ordinary deck S of 52 cards. Find the probability p that the card...

A: We have given that.  There are 52 card in the deck in which they divided into two color i.e red(26) ...

Q: QUESTION 9 The length of an adult Great White Shark is normally distributed with a mean of 3.4 meter...

A: We have given that.   X~N( μ , ?^2 )   μ =3.4 , ? =0.5   Z-score =( x - μ )/?

Q: Direction: Evaluate the given graph below. Write your scientific interpretation of your evaluation/o...

A: We are given Bar Graph with percentages for the years 2007 to 2013  In 2007, sample size is 56. Ther...

Q: he variable which has an insignificant effect on the duration of the stop is _____     Coefficient...

A: Given The data is as follows:

Q: I want to estimate the average time it takes a tomato plant to bear fruit. I randomly sample 16 toma...

A: Given,sample size(n)=16mean(x¯)=36standard deviation(σ)=17α=1-0.85=0.15α2=0.075Z0.075=1.4395      (f...

Q: A major corporation noted that last year its employees averaged - = 5.8 (o = 2.15) absences during t...

A: "Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts f...

Q: 1. A researcher has a population of 100 grade 11 senior high school from which a sample of 25 studen...

A: As per our company guidelines we are supposed to answer only first question. Kindly repost other par...

Q: A manufacturer of sports equipment has developed a new synthetic fishing line that he claims has a m...

A:

Q: has conducted recently a research-study on price behaviour of three leading industrial shares, A, B ...

A:

Q: A) Suppose a die is tossed 5 times. What is the probability of getting exactly 2 fours? B) The prob...

A:

Q: Example Ten percent of items produced on a machine are usually found to be defective. What is the pr...

A:

Q: In Exercises 1 to 6, each situation calls for a significance test. State the appropriate null hypoth...

A: Null and alternative hypotheses: The hypothesis, which is pre assumed as true, tentatively settled u...

Q: 4. Suppose it is known that 74% of men feel they are shorter than their ideal height. a. Describe th...

A: According to central limit theorem the sampling distribution of sample proportion follows the normal...

Q: From the following information, find the standard deviation of x and y variable: Σy= 250 Σχ=235, Ex²...

A:

Q: Es Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, t...

A: We have given that P(Z ≤ c) = 0.3085  

Q: bright red pigment which has been shown to have powerful antioxidant and anticarcinogenic properties...

A: We have given that  Sample size n =36 Sample mean = 13.1 Standard deviation=1.2

Q: Suppose you are testing the hypotheses Ho : p =0.24 vs. p 70.24 with significance level a = 0.29. As...

A:

Q: 3. Give combinatorial proof of a k (") = n () k-1

A: We know that the combination formula: C(n,r) = n!/(n-r)!r!

Q: Wheel thickness on a train is random because wear and tear causes the wheel to wear down. The distri...

A: We have given that,  Sample mean or average (x̄) = 8.29, standard deviation (σ) = 0.52 and sample si...

Q: Suppose a large consignment of televisions contained 13% defectives. If a sample of size 412 is sel...

A:

Q: For a standard normal distribution, find: P(z < c) = 0.8981 Find c rounded to two decimal places.

A: We have given that the random variable Z that follows standard normal distribution with mean 0 and s...

Q: A lottery has a grand prize of $2,000,000, 4 runner-up prizes of $125,000 each, 11 third-place prize...

A:

Q: The sampling distribution of Pis closely related to the normal distribution. True or False True Fals...

A:

Q: The sampling distribution of Pis closely related to the normal distribution. True or False True Fals...

A:

Q: Evidence based Reading and Writing 533 Mathematice 527 that the population standard deviation on eac...

A:

Q: Suppose that you repeatedly roll a pair of fair dice and keep track of the sum. What is the probabil...

A:

Q: Write 32 as a number with an exponent by using 2 as the base

A: Given,number is 32.

Q: 5 5. A sample is selected from a population with u = 32, and a treatment is administered to the samp...

A: The formula of the Cohens’d is,

Q: TILS Three brands of infant powdered milk (infant's formula) were given to three groups of 8 each an...

A:

Q: what is the standard deviation

A: Here use standard normal distribution table for z score  And The average cost of an IRS Form 1040 ta...

Q: A company claims that the mean monthly salary for their managers is 11 thousand dollars. A sample of...

A:

Q: 1. The circle graph shows the results of a survey of 500 college students about their preferred Spri...

A: From the given graph we find the solution.

Q: 5. A list of numbers consists of: 13, 9, 11, 7, and 10. 9ldon (a) Find the average and the SD of thi...

A: Given list is: 13 , 9 , 11 , 7 and 10 We need to find certain questions. 

Q: A firm produces 550 T.V. sets during its first year. The sum total of the imm's production at the en...

A: Given that - A firm produces 550 T.V. sets during its first year. The sum total of the imm's product...

Q: A company claims that the mean monthly residential electricity consumption in a certain region is mo...

A: The standard z test statistic could be used, if you are interested to compare the sample mean with t...

Q: QUESTION 3 The probability distribution of the random variable X is given in the following table. Fi...

A: Given:   x    1   2     3   4   5 P(x) 0.15 0.18 0.05    0.13   0.49  

Q: distributed with a standard deviation of 5.3 seconds. What changes the mean is how long it takes the...

A:

Q: (d) Since the percentage for 4 or 5 children is twice the percentage 1or will be twice as high. 2O g...

A: Given: The observed ages of group of interns at local hospital were: {34,37,30,27,29,36,38} We need ...

Q: In the SQF dataset, the sample proportion of the those stopped by police who are Black is 53%. The s...

A:

Q: You read a newspaper article that describes a study of whether stress management can help reduce hea...

A: Introduction: It is of interest to know whether there is any difference among the three treatments- ...

Q: About 79% of all female heart transplant patients will survive for at least 3 years. Eighty female h...

A: